The ratings of four Restaurant and Resort stocks are down this week, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Asia Entertainment & Resource (NASDAQ:AERL) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Asia Entertainment & Resources engages in the promotion of VIP gaming rooms in Macau, the People’s Republic of China. In Portfolio Grader’s specific subcategory of Sales Growth, AERL also gets an F. For a full analysis of AERL stock, visit Portfolio Grader.

Royal Caribbean Cruises (NYSE:RCL) experiences a ratings drop this week, going from last week’s C to a D. Royal Caribbean Cruises owns five brands in the cruise vacation industry. The stock also gets an F in Earnings Momentum. For more information, get Portfolio Grader’s complete analysis of RCL stock.

The rating of Wendy’s (NASDAQ:WEN) declines this week from C to a D. Wendy’s is a quick-service hamburger company that operates as a franchisor of restaurants in the United States and Canada. The stock gets F’s in Earnings Growth and Margin Growth. The trailing PE Ratio for the stock is 514.00. To get an in-depth look at WEN, get Portfolio Grader’s complete analysis of WEN stock.

Buffalo Wild Wings (NASDAQ:BWLD) earns a D this week, moving down from last week’s grade of C. Buffalo Wild Wings engages in the ownership, operation, and franchise of restaurants primarily in the United States. As of Feb. 14, 2013, 19.5% of outstanding Buffalo Wild Wings shares were held short. The stock has a trailing PE Ratio of 25.40. For more information, get Portfolio Grader’s complete analysis of BWLD stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.